Today we will certainly share a fixing instance of an apple iphone 12 that is incapable to activate Press the power switch and also the phone won’t turn on Link the phone to power and also the phone still will not activate Disconnect the display screen Power up the motherboard Please be noted that the time for powering up should not be also lengthy It can be seen that the present worth is big The motherboard has a large present which shows the motherboard is short-circuited Next, we require to get rid of the motherboard as well as situate the malfunctioning part for fixing Procedure the diode worth of PP_BATT_VCC line with a multimeter The diode worth is 0 It can be confirmed that PP_BATT_VCC line is short-circuited PP_BATT_VCC line and PP_VDD_MAIN line of iPhone 12 are attached in series by an inductor So the short-circuited PP_BATT_VCC line may likewise trigger the PP_VDD_MAIN line to short circuit The old option to fix the big existing problem is through rosin spotting Via the melting of rosin, we can validate the damaged component Though the solution is economical and also reliable, it has some drawbacks The motherboard needs to be covered with rosin while the rosin is tough to tidy up later In enhancement, we need to get rid of protecting covers on the motherboard for a detailed inspection There is no question that operation problem will be significantly boosted Today we will present a more advanced as well as reliable method to try to find brief circuit on the motherboard with the aid of a Thermal Imager Cam The thermal imager locates the part of which temperature is more than regular value via infrared radiation The thermal imager can spot motherboard electric leak within seconds The malfunctioning parts will certainly be identified in no time as soon as you put the motherboard under the video camera, significantly improving repair performance While examining total motherboard working conditions, the thermal imager can determine damaged get rid of high accuracy Moreover, the thermal imager is a professional in finding small electric leak, short circuit as well as other troubles with simple and risk-free procedure, considerably decreasing the mistake price First of all, we put the motherboard on the functioning platform Attach the black probe of the straight power supply to the ground and connect the red probe to PP_BATT_VCC line The temperature on the leading left edge has risen The malfunctioning part can be confirmed on the leading left edge Open the bitmap We can see that PP_BATT_VCC line is out the leading left corner Given that PP_BATT_VCC line and also PP_VDD_MAIN line are connected in series by an inductor, we can evaluate that PP_VDD_MAIN line is short-circuited With inductors of PP_BATT_VCC line, click one more side of the inductors The various other side is linked to PP_VDD_MAIN line We can once more determine the series of defective component It can be seen on the bitmap that the PP_VDD_MAIN line gets on the reasoning board Following, we separate the motherboard Placed the motherboard on the 170 ° C Home heating System to heat Eliminate the motherboard After the logic board has actually cooled down, power up the logic board Attach the black probe to the ground and also attach the red probe to PP_VDD_MAIN line Via the thermal photo, we can now verify the defective component The capacitor is flawed with charring Remove the capacitor Clean the bonding pad with PCB Cleanser Gauge the diode worths of PP_VDD_MAIN line and also PP_BATT_VCC line The diode worths return to typical The brief circuit mistake has been gotten rid of Then we recombine the motherboard Assemble the phone to evaluate The phone turns on generally Wi-fi as well as baseband work well IMEI number can be seen The fault has actually been removed You can purchase the Thermal Imager Video camera on REWA store Please do not hesitate to call our account supervisors or client service team for even more details Thank you for watching
Fix iPhone 12 Won’t Turn On By Infrared Thermal Imaging Camera
